package com.sdk.hook

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import java.lang.StringBuilder

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        var builder:StringBuilder = StringBuilder();
        builder.append("111")
        builder.toString()

        var str:String = String()
        str.plus("222")
    }
}
